Quick Transmigration: Stay Away, I’m Just Cannon Fodder

[A male lead split into multiple versions, but they're all the same person + a theatrical female lead + a male lead who dotes on her + a Mary Sue beloved by everyone! There will be love at first sight, love that grows over time, and even some fake relationships (otherwise, how would the mini-worlds get their happy endings?)] An R-rated starlet, An Ruo, was supposed to be a vicious cannon-fodder character in a novel. But she didn't follow the original plot and act viciously, so an irresistible force killed her off in a slapdash fashion. Then the System just as hastily dragged her off to all kinds of bizarre worlds to complete missions: face-slapping trash, helping the female leads get the lives they want, and, along the way, sacrificing herself to live happily ever after with the male leads (in pain and pleasure) until they grow old together. The System, convinced it had found a great Host, rubbed its hands together and grinned: I can bring you back to life, make you immortal, give you endless money, or grant you anything you want. Just complete the missions. The entertainment industry's hottest young starlet, a fairy-like beauty, dropped to her knees with tears in her lovely eyes. “As long as you let me keep my reputation intact, I'll do anything you ask!” “Please, help me clear my phone's storage and browser cache. Or just destroy my phone completely! I don't care if I have to do missions. I'd even rip the male lead's head off!” System: ??? Could it regret this? It had a feeling this Host wasn't right in the head. [Period drama: the female lead, a cannon-fodder fellow villager, vs. the abandoned son of a prestigious family, a genius researcher as Male Lead One / a fiercely strong wife-doting maniac as Male Lead Two] [School story: a background character vs. the archetypal F3 male lead] [Modern setting: the male lead's aloof secretary vs. a scheming boss, the boss's aloof childhood friend, and the boss's childhood friend who serves in the military] And so on. The settings in the blurb aren't necessarily listed in order. I'll write whichever world comes to mind.